传感技术学报2024，Vol.37Issue(9)：1505-1509,5.DOI:10.3969/j.issn.1004-1699.2024.09.006
光栅光阀型闭环直流电流互感器及温度修正方法研究
Study on Grating Light Valve Type Closed-Loop DC Current Transformer and Temperature Correction Method
摘要
Abstract
In order to meet the needs of DC power system energy measurement,power monitoring,control and protection,a closed-loop optical feedback grating light valve(GLV)type DC current sensing scheme based on micropower optical control signal source is pro-posed.A polarization maintaining fiber based all-fiber temperature sensor is integrated to realize the real-time temperature monitoring of GLV probe,and then the system temperature error correction is realized.The prototype development and test(rated current In=500 A)is completed,and the results show that in the range of 10%In-110%In,the fluctuation of system specific difference(RE)is less than±0.2%.In the range of 0-1200 Hz,the harmonic measurement error is less than-0.693%.In the range of-40℃-85℃,the error corrected RE fluctuation range is-0.186%-0.084%.The step response rise time is less than 125 μs.The results show that the system meets the error limit of class 0.2 specified in GB/T 26216.1-2019.关键词
直流/电流互感器/光栅光阀/闭环/温度Key words
DC/current transformer/grating light valve/closed loop/temperature分类
信息技术与安全科学引用本文复制引用
甘战,谭劲,王典浪,张瑞,罗曦,温易宸,赵俊..光栅光阀型闭环直流电流互感器及温度修正方法研究[J].传感技术学报,2024,37(9):1505-1509,5.基金项目
中国南方电网公司科技项目(010800KK52220001) （010800KK52220001）
航空科学基金项目(2019ZH069003) （2019ZH069003）
